Introduction: Coronary artery ectasia (CAE) is associated with increased morbidity and mortality, and is known to also be associated with atherosclerosis. CAE is considered a variant of coronary artery disease, and is more common in patients with hypertension. We aimed to evaluate the neutrophil-lymphocyte ratio (NLR) and mean platelet volume (MPV) in hypertensive patients with CAE.Patients and Methods: The study was designed retrospectively in the cardiology unit of Bolu Abant Izzet Baysal University Medical Faculty Hospital between January 2017 and October 2019. A total of 7287 coro-nary angiographies were retrospectively analyzed to detect the incidence of ischemic heart disease. Diagnosis of CAE was made visually by two cardiologists who were blinded to the study aims. All included patients had a diagnosis of hypertension. After appropriate exclusions, hypertensive patients were divided into CAE and normal coronary artery groups, and the laboratory parameters of the two groups were compared.Results: The neutrophil counts [4.2 (2.4-8.6) vs. 4.2 (2.0-6.7) u/mm3, p= 0.015], red cell distribution width [15.7 (12.8-21.6) vs. 15.3 (13.2-18.6) %, p= 0.002], platelet distribution width [17.9 (15.5-23.0) vs. 17.5 (15.9-20.8) %, p= 0.001], NLR [2.1 (0.7-12.8) vs. 1.9 (0.8-4.5), p< 0.001], platelet-lymphocyte ratio [109.8 (63.0-321.8) vs. 100.9 (34.7-223.6), p= 0.001], MPV (8.4 ± 1.4 vs. 7.9 ± 1.0 fL, p< 0.001), and plateletcrit (0.19 ± 0.05 vs. 0.18 ± 0.4 %, p= 0.007) were significantly higher, and the lymphocytes counts [2.1 (0.5-4.2) vs. 2.2 (1.1-6.7) u/mm3, p= 0.013] were significantly lower in hypertensive patients with CAE than in those without.Conclusion: Hemogram parameters could be useful biomarkers for determining a thrombotic state and in-flammatory response in hypertensive patients with CAE.